NEW YORK (TheStreet) -- The market is full of opportunities, Jim Cramer said on Mad Money Thursday. Even though the high-frequency "pickpockets" might shave a few pennies from your trade, Cramer said that doesn't mean you shouldn't invest.

Case in point, seed giant Monsanto (MON). Last week, Cramer suggested investors buy Monsanto right after it reported earnings because the stock has a history of selling off on the news. Wednesday, like clockwork, Monsanto released its earnings, shares dipped and investors could have made a few dollars a share in a single day.

Thursday, Monsanto caught an upgrade, adding another 2.6% to investors' very predictable winnings.

Cramer said if a company's CEO is bankable, there's no reason to buy shares when the market puts them on sale. Last quarter, both PPG (PPG) and Eaton (ETN), a stock Cramer owns for his charitable trust, Action Alerts PLUS, were beaten down by the markets only to bounce back in short order.

This quarter, Cramer liked both PVH Corp (PVH) and Nike (NKE), another Action Alerts PLUS holding. He said both these stocks represent real opportunities, ones that can certainly overcome any high-frequency inequities.

Executive Decision: Bob Benmosche

For his "Executive Decision" segment, Cramer sat down with Bob Benmosche, president and CEO of American International Group (AIG), the insurance giant that's had a 59% run since Cramer last checked in 17 months ago.

Benmosche said it will take some time for regulators to get AIG's stress testing tuned in, but so far the company has been able to buy back a little stock and institute a small dividend. It's also once again returning capital to shareholders.

More important, Benmosche said AIG continues to do right by its customers and pay claims. He said homeowners affected by Superstorm Sandy were very happy they had AIG.

AIG is also investing heavily in technology, building a world-class platform that will provide the company with quality data and the ability to accurately project risk out into the future. This is something the regulators will be happy to see, Benmosche added.

Cramer said AIG is the cheapest of all the insurers he follows.

More 'Final Four'

For the second installment of his "Final Four" tribute to NCAA basketball's "March Madness," Cramer moved to the Nasdaq bracket where the contenders, Intercept Pharmaceuticals (ICPT) and Fuel Cell Technologies (PLUG) were duking it out to see which makes the final matchup Friday.

Cramer said any investors who own these stocks have had a remarkable run and should sell three-quarters of their positions to lock in their gains.

As for the matchup, Cramer said Intercept's liver disease treatments are very promising and their orphan status with the Food and Drug Administration makes them very attractive. That said, approvals for the company's first and second drugs are pretty much priced into the stock at these valuations.

Fuel Cell, on the other hand, has a sizable backlog of orders for its forklift power systems, with a notable customer that's none other than Wal-Mart (WMT). This company needs a steady stream of positive news to keep it going, said Cramer, which makes it worrisome.

After careful evaluation of both companies, Cramer said he's declaring Intercept the winner in the Nasdaq bracket, and the company will face off against last night's winner, oil driller Nabors Industries (NBR).

Cramer's Playbook

For this week's installment of "Cramer's Playbook," Cramer answered the questions of how dividends are taxed and whether taxes should be considered in investing decisions.

Cramer explained that taxes on investments have indeed gone up this year. Gains made from holdings of less than a year will be taxed at ordinary income levels, typically 39.6%. Gains from over a year qualify as long-term gains and they are taxed at just 15% for more people, 20% for higher-income brackets.

So does that mean investors should hold onto investments for at least a year to save on taxes? Absolutely not, said Cramer. Never let tax planning control your investment decisions.

The government will take a cut of your gains, yes, but better to have gains than not have them by holding onto a stock too long and have your gains evaporate before your eyes. Doing your homework is hard enough, Cramer concluded. Don't add needless tax worries to your to-do list.

No Huddle Offense

In his "No Huddle Offense" segment, Cramer opined on the ferocious selling in FireEye (FEYE) and Splunk (SPLK), two tech names that were riding high -- until they weren't.

Shares of both stocks have round-tripped this year. FireEye shares started the year at $57, rallied to $96 and are now down at $54. Splunk started at $69, also rallied to $96 and then collapsed to $66 a share. Both companies are still riding huge growth themes, so what happened?

Cramer noted a huge block of insider selling at FireEye at its highs. It's clear now that the stock just couldn't handle that many shares being offered. Splunk had similar selling at its highs, along with a "mysterious" large block of shares that were offered for sale, also near its highs.

Cramer said these stocks are simply hard to own and have skittish shareholder bases. When compared to the industrials, which have solid shareholder bases and little insider selling, it's easy to see why investors have been preferring these names instead.